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1 Selection of varieties Excellent varieties are the basis of good harvest, should be selected to adapt to the climatic conditions of our county, the dry matter yield of the whole plant harvested at the ripening stage is above 1000kg/667?, silage corn should have large leaves, small angles of stems and leaves, suitable for close planting. plant. In dry matter, crude protein content is 7% to 8.5%, crude fiber content is 20% to 35%, and disease resistance and lodging resistance are strong.
2 Preparation before broadcast
2.1 Selection of plots The choice of land plots is characterized by high topography, convenient transportation, moderate soil fertility, pH 5.3 to 7.8, and well-drained farmland.
2.2 Site preparation After the harvest of the previous crop, the crop was removed and plowed. The depth of tillage was 15cm to 25cm. After the cultivation, the plot was crushed and the ground was leveled. In some fields with good soil and water fertility conditions and relatively soft soil, after the first crop is harvested, the stubble on the ground can be treated with no-tillage sowing.
2.3 Fertilization The basal fertilizer is mainly farmyard manure, generally 667 manure fertilizers are used for 2000-3000, superphosphate 35-40, and corn compound fertilizers are 15-20.
3 sowing
3.1 There are several methods for sowing seedlings, such as the live broadcast method of field, the film-mulching method, the ridge cultivation method and the film-mulching method. At present, there are two types of methods, ie, the live broadcasting method of Daejeon and the sowing method of mulching.
3.2 The sowing methods include drawing lines (single line drilling, double row drilling), digging on demand and seedling transplanting.
3.3 Seeding Depth The depth of the ditch is 3%, and 2 to 3? Acupuncture points deep 2 to 3?, 2~4?
3.4 Sowing Density Silage corn planting density is generally about 50% higher than that of the harvested grain. Density is 667 to 5000 to 7500 planting lines. The row spacing is 60 and 80 wide and narrow, and the plant spacing is 15 to be ideal.
4 Field Management
4.1 seedling management 5-7 days after sowing, seedling emergence, 9-10 days can be a complete seedling, when the corn leaves reach 3 to 4 leaves should be time and seedlings, in the reach of 4 to 6 visible leaves, should Timely set seedlings, so that "four to four to stay", that is, to stay weak and strong, to stay a small stay, go to the sick and stay healthy, to leave the pure, seedlings in time to make up the seedlings is an important basis to ensure a reasonable dense planting, access to high yield.
4.2 Scientific top-dressing corn is a crop that requires more fertilizer, topdressing with nitrogen fertilizer, topdressing urea every 667 hrs: jointing stage (6 joints after full-spreading) 10 ~ 11?, before corn tassels are drawn out (Trumpet period) 8-12.
4.3 Cultivated weeds and weeds compete for space, sunlight, moisture and nutrients, and are wintering and host sites for certain pathogens and pests. Too much weeds can seriously affect the yield of corn and cause the occurrence of diseases and pests of corn. Therefore, it is necessary to For cultivating and weeding. The methods of cultivating and weeding generally include manual weeding and chemical weed control (must use special herbicides for corn fields). In the 6 to 7 leaves when combined with top dressing, weeding and weeding. After 2nd to 3rd cultivating and removing impurities from ordinary tillers.
4.4 Irrigated drought-resistant maize is a drought-tolerant crop, but the amount of water required is large. In any period, water shortage may cause a decline in yield. In the production process, it encounters drought and watering. In the drought year, it is necessary to promote mulching technology.
4.5 Preventing Lodging The lodging of corn not only affects the yield but also affects the quality of silage corn feed. Measures to control corn lodging include: selection of varieties with strong lodging resistance, strengthening of cultivating cultivators, scientific fertilization, reasonable close planting, and seedling seedlings.
5 Pest Control Pest prevention and control should focus on prevention and strengthen monitoring. Once it happens, take immediate steps to control it. For specific pest control methods, please refer to the relevant manual on corn cultivation pests and diseases or ask the relevant local technical department to solve it.
6 timely harvesting timely harvesting can obtain higher yield and high-quality feed, and the silage used for making should be harvested at the end of milk harvesting, that is, between 23 and 30 days after corn silking.
High-yielding Cultivation Techniques of Silage Maize
In the technical guidance for scientific dairy cows of dairy cattle breeding demonstration households, the farmers’ awareness of scientific feeding awareness, backwardness in concept, feeding and feeding, and feedstuffs were exposed. The lack of green and green fodder in the winter and spring seasons is more prominent. The vicious circle of fat, winter lean, and spring death is the main bottleneck restricting the rapid and healthy development of animal husbandry in our county. The planting of high-yield and high-quality forages for the production of silage is the main way to solve the contradiction between livestock and livestock caused by unbalanced seasons, and is the prerequisite for the development of high-quality, high-efficiency livestock husbandry. Silage maize is known as the “king of feed†because of its short growth cycle, high yield, low cost, high nutritional value, good palatability, and tolerance to storage. It is well-known as the most important feed resource for dairy cows. Therefore, it is of great significance to vigorously develop silage-fed maize for promoting the development of animal husbandry in our county, adjusting and optimizing the planting structure, increasing the comprehensive benefits of agriculture, and increasing the income of farmers. Due to the short planting age of silage corn in our county and the lack of planting experience, in order to standardize silage corn cultivation techniques and improve silage corn cultivation techniques, the high-yielding silage maize cultivation techniques are now described as follows: